NISSAN X-TRAIL 2001 Service Repair Manual

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12. Install the connecting rod bearings to the connecting rod and the
connecting rod cap.
●When installing the connecting rod bearings, apply engine oil
to the bearing surface (inside). Do not apply engine oil to the
back surface, but thoroughly clean it.
●When installing, align the connecting rod bearing stopper pro-
trusion with the notch of the connecting rod to install.
●Check the oil holes on the connecting rod and those on the
corresponding bearing are aligned.
13. Install the piston and connecting rod assembly to the crankshaft.
●Position the crankshaft pin corresponding to the connecting
rod to be installed onto the bottom dead center.
●Apply engine oil sufficiently to the cylinder bore, piston and
crankshaft pin.
●Match the cylinder position with the cylinder No. on the con-
necting rod to install.
●Using a piston ring compressor, install the piston with the front
mark on the piston crown facing the front of the engine.
CAUTION:
Be careful not to damage the cylinder wall and crankshaft
pin, resulting from an interference of the connecting rod big end.
14. Install the connecting rod cap.
●Match the stamped cylinder number marks on the connecting
rod with those on the cap to install.
15. Tighten the connecting rod bolt as follows.
a. Apply engine oil to the threads and seats of the connecting rod
bolts.
b. Tighten bolts to 18.6 to 20.6 N·m (1.9 to 2.1 kg-m, 14 to 15 ft-lb).
c. Put mating (with paint) on each bolt and connecting rod cap, all
in the same direction (when using a protractor).
d. Then tighten all bolts 90 to 95 degrees clockwise (target: 90
degrees) (Angle tightening).
CAUTION:
Always use either an angle wrench or protractor. Avoid
tightening based on visual check alone.
●After tightening the bolt, make sure that the crankshaft rotates smoothly.
●Check the connecting rod side clearance. Refer to EM-89, "CONNECTING ROD SIDE CLEARANCE" .
PBIC0266E
PBIC0267E
SBIA0282E
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16. Install flywheel (M/T model) or drive plate (A/T model).
●Install drive plate, reinforcement plate and pilot converter as
shown in figure (A/T model).
●Using drift of 33 mm (1.30 in) in diameter, push pilot converter
into the end of crankshaft (A/T model).
17. Install knock sensor.
●Make sure that there is no foreign material on the cylinder
block mating surface and the back surface of the knock sen-
sor.
●Install sensor with connector facing lower left by 45° as
shown.
●D o n o t t i g h t e n t h e m o u n t i n g b o l t s w h i l e h o l d i n g t h e c o n n e c t o r.
●Make sure that the knock sensor does not interfere with other-
parts.
CAUTION:
If any impact by dropping is applied to the knock sensor,
replace it with new one.
18. Install crankshaft position (POS) sensor.
19. Install followings in reverse order of removal.
How to Select Piston and Bearing EBS00KNV
DESCRIPTION
*For the service parts, the grade for fitting cannot be selected between a piston pin and a connecting rod.
(Only 0 grade is available.) The information at the shipment from the plant is described as a reference.
●The identification grade stamped on each part is the grade for the dimension measured in new condition.
This grade cannot apply to reused parts.
●For reused or repaired parts, measure the dimension accurately. Determine the grade by comparing the
measurement with the values of each selection table.
●For details of the measurement method of each part, the reuse standards and the selection method of the
selective fitting parts, refer to the text.
KBIA0075E
KBIA0069E
Selection points Selection parts Selection items Selection methods
Between cylinder block to
crankshaftMain bearingMain bearing grade (bearing
thickness)Determined by match of cylin-
der block bearing housing
grade (inner diameter of hous-
ing) and crankshaft journal
grade (outer diameter of jour-
nal)
Between crankshaft to connect-
ing rodConnecting rod bearingConnecting rod bearing grade
(bearing thickness)Combining service grades for
connecting rod big end inner
diameter and crankshaft pin
outer diameter determine con-
necting rod bearing selection.
Between cylinder block to pis-
tonPiston and piston pin assembly
The piston is available together
with piston pin as an assembly.Piston grade (piston outer
diameter)Piston grade = cylinder bore
grade (inner diameter of bore)
*Between piston to connecting
rod———

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HOW TO SELECT PISTON
When New Cylinder Block is Used:
●Check the cylinder bore grade on rear left side of cylinder block, and select a piston of the same grade.
●If there is a corrected stamp mark on the cylinder block, use it as
a correct reference.
When Cylinder Block is Reused:
1. Measure the cylinder block bore inner diameter.
2. Determine the bore grade by comparing the measurement with the values under the cylinder bore inner
diameter of the “Piston Selection Table”. Select the piston of the same grade.
Piston Selection Table
Unit: mm (in)
NOTE:
●The piston is available together with piston pin as an assembly.
●The piston pin (piston pin bore) grade is provided only for the parts installed at the plant. For service parts,
no grades can be selected. (Only 0 grade is available.)
HOW TO SELECT CONNECTING ROD BEARING
When New Connecting Rod and Crankshaft are Used:
1. Apply big end inside diameter grade stamped on connecting rod
side face to the row in the “Connecting Rod Bearing Selection
Table”.
SBIA0283E
KBIA0259E
Grade number (Mark) 1 2 (or no mark) 3
Inner diameter of cylinder
bore89.000 - 89.010 (3.5039 - 3.5043) 89.010 - 89.020 (3.5043 - 3.5047) 89.020 - 89.030 (3.5047 - 3.5051)
Outer diameter of piston 88.980 - 88.990 (3.5031 - 3.5035) 88.990 - 89.000 (3.5035 - 3.5039) 89.000 - 89.010 (3.5039 - 3.5043)
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2. Apply pin diameter grade stamped on crankshaft front side to
the column in the “Connecting Rod Bearing Selection Table”.
3. Read the symbol at the cross point of selected row and column
in the “Connecting Rod Bearing Selection Table”.
4. Apply the symbol obtained to connecting rod bearing grade table
to select.
When Crankshaft and Connecting Rod are Reused:
1. Measure dimensions of the big end inner diameter of connecting rod and outer diameter of crankshaft pin
individually.
2. Apply the measured dimension to the “Connecting Rod Bearing Selection Table”.
3. The following steps are same as in Step 3 or later in “When New Connecting Rod and Crankshaft are
Used”.
Connecting Rod Bearing Selection Table.
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Connecting Rod Bearing Grade Table.
Undersize Bearings Usage Guide
●When the specified oil clearance is not obtained with standard size connecting rod bearings, use under-
size (US) bearings.
●When using undersize bearing, measure the bearing inner diameter with bearing installed, and grind the
crankshaft pin so that the oil clearance satisfies the standard.
Bearing undersize table
Unit: mm (in)
CAUTION:
In grinding the crankshaft pin to use undersize bearings, keep
the fillet R (All crankshaft pins).
HOW TO SELECT MAIN BEARING
When New Cylinder Block and Crankshaft are Used:
1. “Main Bearing Selection Table” rows correspond to bearing
housing grade on rear left side of cylinder block.
●If there is a corrected stamp mark on the cylinder block, use it
as a correct reference.
2. Apply journal diameter grade stamped on crankshaft front side
to column in “Main Bearing Selection Table”.
3. Find sign at crossing of row and column in “Main Bearing Selection Table”.
CAUTION:
There are two main bearing selection tables. One is for odd-numbered journals (No. 1, 3 and 5) and
the other is for even-numbered journals (No. 2 and 4). Make certain to use the appropriate table.
This is due to differences in the specified clearances.
4. Apply the symbol obtained to “Main Bearing Grade Table” to select.
NOTE:
Service part is available as a set of both upper and lower.
Grade0123
Upper / Lower
thickness mm (in)1.499 / 1.495
(0.0590 / 0.0589)1.503 / 1.499
(0.0592 / 0.0590)1.507 / 1.503
(0.0593 / 0.0592)1.511 / 1.507
(0.0595 / 0.0593)
Identification color Black Brown Green Yellow
Size Thickness
US 0.25 (0.0098) 1.624 - 1.632 (0.0639 - 0.0643)
KBIA0148E
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When Cylinder Block and Crankshaft are Reused:
1. Measure inner diameter of cylinder block main bearing housing and outer diameter of crankshaft journal.
2. Apply measurement in above step 1 to “Main Bearing Selection Table”.
3. Follow step 3 and later in “When New Cylinder Block and Crankshaft are Used”.
Main Bearing Selection Table (No. 1, 3 and No. 5 journals)
KBIA0149E

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Main Bearing Selection Table (No. 2 and 4 journals)
Main Bearing Grade Table (All Journals)
Unit: mm (in)
KBIA0150E
Grade number Thickness Identification color
(UPR / LWR)Remarks
0 1.973 - 1.976 (0.0777 - 0.0778) Black
Grade and color are the same
for upper and lower bearings. 1 1.976 - 1.979 (0.0778 - 0.0779) Brown
2 1.979 - 1.982 (0.0779- 0.0780) Green
3 1.982 - 1.985 (0.0780 - 0.0781) Yellow
4 1.985 - 1.988 (0.0781 - 0.0783) Blue
5 1.988 - 1.991 (0.0783 - 0.0784) Pink
6 1.991 - 1.994 (0.0784 - 0.0785) Purple
7 1.994 - 1.997 (0.0785 - 0.0786) White

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Use Undersize Bearing Usage Guide
●Use undersize (US) bearing when oil clearance with standard size main bearing is not within specification.
●When using undersize (US) bearing, measure the bearing inner diameter with bearing installed, and grind
journal until oil clearance falls within specification.
Bearing undersize table
Unit: mm (in)
CAUTION:
Keep fillet R when grinding crankshaft journal in order to use
underseas bearing (All journals).
Inspection After DisassemblyEBS00KNW
CRANKSHAFT END PLAY
●Using dial indicator, measure crankshaft travel amount by mov-
ing the crankshaft forward or backward.
●If the measured value exceeds the limit, replace the thrust bear-
ings, and measure again. If it still exceeds the limit, replace the
crankshaft also.
01UPR 1.973 - 1.976 (0.0777 - 0.0778)
Black / Brown
Grade and color are different
for upper and lower bearings. LWR 1.976 - 1.979 (0.0778 - 0.0779)
12UPR 1.976 - 1.979 (0.0778 - 0.0779)
Brown / Green
LWR 1.979 - 1.982 (0.0779 - 0.0780)
23UPR 1.979 - 1.982 (0.0779- 0.0780)
Green / Yellow
LWR 1.982 - 1.985 (0.0780 - 0.0781)
34UPR 1.982 - 1.985 (0.0780 - 0.0781)
Yellow / Blue
LWR 1.985 - 1.988 (0.0781 - 0.0783)
45UPR 1.985 - 1.988 (0.0781 - 0.0783)
Blue / Pink
LWR 1.988 - 1.991 (0.0783 - 0.0784)
56UPR 1.988 - 1.991 (0.0783 - 0.0784)
Pink / Purple
LWR 1.991 - 1.994 (0.0784 - 0.0785)
67UPR 1.991 - 1.994 (0.0784 - 0.0785)
Purple / White
LWR 1.994 - 1.997 (0.0785 - 0.0786) Grade number Thickness Identification color
(UPR / LWR)Remarks
Size Thickness
US 0.25 (0.0098) 2.106 - 2.114 (0.0829 - 0.0832)
KBIA0148E
Standard : 0.10 - 0.26 mm (0.0039 - 0.0102 in)
Limit : 0.30 mm (0.0118 in)
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CONNECTING ROD SIDE CLEARANCE
●Measure side clearance between connecting rod and crankshaft
arm with feeler gauge.
●If the measured value exceeds the limit, replace the connecting
rod bearings, and measure again. If it still exceeds the limit,
replace the crankshaft also.
PISTON AND PISTON PIN CLEARANCE
Inner Diameter of Piston Pin
Measure the inner diameter of piston pin bore with an inside
micrometer.
Outer Diameter of Piston Pin
Measure outer diameter of piston pin with a micrometer.
Piston and Piston Pin Clearance
(Piston pin clearance) = (Piston pin bore diameter) – (Outer diameter
of piston pin)
●If clearance exceeds specification, replace either or both of pis-
ton/piston pin assembly and connecting rod assembly with refer-
ence to specification of each parts.
●Refer to piston selection table to replace piston/piston pin
assembly. Refer to EM-83, "
HOW TO SELECT PISTON" .
●Refer to connecting rod bearing selection table to replace con-
necting rod. Refer to EM-83, "
HOW TO SELECT CONNECTING
ROD BEARING" . Standard : 0.20 - 0.35 mm (0.0079 - 0.0138 in)
Limit : 0.50 mm (0.0197 in)
KBIA0071E
Standard: 19.993 - 20.005 mm (0.7871 - 0.7876 in)
PBIC0116E
Standard: 19.989 - 20.001 mm (0.7870 - 0.7874 in)
PBIC0117E
Standard: 0.002 - 0.006 mm (0.0001 - 0.0002 in)
KBIA0259E

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NOTE:
●The connecting rod small end grade and piston pin hole (pis-
ton pin) grade are provided only for the parts installed at the
plant. For service parts, no grades can be selected. (Only 0
grade is available.)
●Refer to EM-91, "CONNECTING ROD BUSHING OIL
CLEARANCE (SMALL END)" for the values for each grade at
the plant.
●Regarding marks on piston head, Refer to EM-83, "HOW TO
SELECT PISTON" .
PISTON RING SIDE CLEARANCE
●Measure side clearance of piston ring and piston ring groove
with feeler gauge.
●If out of specification, replace piston and/or piston ring assembly.
PISTON RING END GAP
●Check if inner diameter of cylinder bore is within specification.
Refer to EM-93, "
PISTON TO CYLINDER BORE CLEARANCE"
.
●Insert piston ring until middle of cylinder with piston, and mea-
sure gap.
●If out of specification, replace piston ring. If gap still exceeds the limit even with a new ring, re-bore cylin-
der and use oversized piston and piston ring.
SBIA0282E
Standard:
Top ring : 0.045 - 0.080 mm (0.0018 - 0.0031 in)
2nd ring : 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Oil ring : 0.065 - 0.135 mm (0.0026 - 0.0053 in)
Limit:
Top ring : 0.11 mm (0.0043 in)
2nd ring : 0.10 mm (0.0039 in)
SEM024AA
Standard:
Top ring : 0.21 - 0.31 mm (0.0083 - 0.0122 in)
2nd ring : 0.32 - 0.47 mm (0.0126 - 0.0185 in)
Oil ring : 0.20 - 0.60 mm (0.0079 - 0.0236 in)
Limit:
Top ring : 0.54 mm (0.0213 in)
2nd ring : 0.67 mm (0.0264 in)
Oil ring : 0.95 mm (0.0374 in)
SEM822B